Mechanism for grinding flats in carding-engines.



J. FOSSEL.

MECHANISM FOR GRINDING FLATS IN CARDING ENGINES.

APPLICATION FILED NOV18, I914.

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Patented Feb. 1, 1916.

2 SHEETS-SHEET l .a/s viz THE COLUMBIA PLANOGRAPH c0., WASHINGTON. D c.

J. FOSSEL.

MECHANISM FOR GRINDING FLATS IN CARDING ENGINES.

APPLICATION nuzn NOV. 19. 1914.

Patented Feb. 1, 1916.

2 SHEETS-SHEET 2- Invent on tneflses.

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THE COLUMBIA PLANOURAPH CO-. WASHINGTON, D. c.

JOSEPH FOSSEL, OF GRAFTON, .MASSACHUSETTS.

MECHANISM FOR GRINDING FLATS IN GAMING-ENGINES.

Specification of Letters Patent.

Patentedlteb. 1, mile.

Application filed November 18,1914. Serial No. 872,740.

To all whom it mac concern:

Be it known that I, JosErH Fossnn, a citizen of the United States, and a resident of the town of Grafton, in thecounty of Worcester' and Commonwealth of Massachusetts, have invented a new and useful Improvement in Mechanism for Grinding Flats in "Carding-Engines, of which the following, together with the accompanyingdrawings, is aspecification.

The objects of my invention; are to provide agrinding mechanism for the revolving flatsof carding-engines by which the flats will be ground accurately and uniformly; further, to render the automatic mechanism more-simplein construction and reliable in operation, and alsoto facilitate the manipulation of the hand operated parts 'of the; mechanism, and I-. accomplish these objects by means of the mechanism hereinafter described and illustrated. in the accompanying drawings, in Which Figure 1 is a side'elevatio-n of a flatgr'inding mechanism embodying my invention. Fig. 2 represents :the inner side of one of the tracks over which the flats are moved beneath the grinding roll. Fig. 3 representsthe spring actuated bolt for engaging the flats, its inclosing case. being shown in section. Fig. 4 is a front elevation oft-he flat-grinding mechanism, shown in sectional View onxthe plane of the dot and dash line 4-4, Fig; 1. Fig. 5 is a top view of-the'ends of three adjacent flatsxand a spring: actuated bolt; arranged toiperiodi cally engagetheflats, whereby the movements of the flats beneath the grinding roll are made to carry thegrinding rolltoward the wire face of the flat 'duringthe operation of: grinding. Fig. 6 is .an end view of the spring actuated bo-ltby which the flat'sare engaged, showing thecamplate; by which the bolt is released from the flats.

Similar reference characters refer to similar parts in the different figures.

Referring to the drawings,: the broken linesl, 1, Figs. land 4,,denot'e a portion of the side frame of a carding machine, to which upright stands2, 2 are attached to support the grinding ,mechanism. The stands 2., 2 are provided at'theirupperends with arms 3, 4. Bolted to the arms 3', 4are bars 5', 5xwhichform a tra-clfoverwhich the flats 6' are 1noved,.in the directioniofithe arrow 7, beneath a revolving grindingroll-B, with-the: wire teeth 9 of each flat uppermost most and held in contact with the flanges 11. 7

As theflats are successively moved beneath the grinding roll 8, theirribs 13 are brought into contact with arms 14 and 15 attached torthe inner ends of shortarocking shafts 1.6, 16 ournaled in the upright stands 2 Levers 1.79am, attached to the outer ends of: the: rocking shafts, carrying weights 18 which serve to press :the arms 14 and 15 against the ribs 13 supported thereon, in order to holdthe working seats 12 of the flats in contact with the flanges'll'. The weights18 are adjustable on the levers 17 in order that the upward pressure against the flats whilethey are-being ground will be only sufficient to prevent vibration of the flat.

Journaled in the upper ends of the arms 3, 3 islashaft 19 to which levers'20-areattached, extending toward the arms 4 beneath the axis of the grinding roll 8. Adjustably attached to the levers 20 are boxes 21in which the shaft 22 of the grinding roll Sisjournaled. The boxes 21 are secured to the levers20 by bolts 23 which pass through slots 24 to allow for the vertical adjustment of. the boxes, which is accomplished by means of a screw threaded bolt125 held in a screw threaded. lug .26. projecting. fromthe lever; 20, having the opposite ends of the bolt 25 bearingagainst lugs 27 and 28 projecting from the sides of the boxes 21.

The free ends 29 of the levers20 rest upon arms 30 carried by a rocking shaft 31. which is:journaledin the upper ends of the arms '4, of the upright stands 2. Attached to one end of, the rocking shaft 31 is a lever 32, with its freeend 33 bearing against a stud 34, carriedby abell cranklever whichis pivoted on astud 3'5 andais provided with arms 36 and 37. The arm 36 carries a weight 38133 whichithe bell crank is rocked in one direction, and its rocking movement is limitedby an adjustingscrew39 held in a lug 40. projectingfromthebell crank lever. Theadju'sting screw 39 is arranged tostrike against a ,bracket or stud 4-1 projecting from the side of the stand 2. The spring arm carries at its free end a tubular casing 37 inclosing a spring actuated bolt 42, capable of a rocking and sliding motion, and having its inner end provided with a flange 43 adapted to rest upon the working seats 12 of the flats as theyare moved beneath the grinding roll. One edge of the flange 43 is provided with a downwardly extended lip 44 which engages the. edge of the flat as the latter moves be- .neath the grinding roll, causing the movement of the flat to impart a swinging movement to the arm 37 upon its pivotal stud 35. The movement of the arm 37 as actuatedby the moving. flats, will move the stud 35 toward the left, Fig. 1- The free end 33 of the lever 32 will follow the movement of the stud 34 by gravity, thereby rocking the shaft 31 and depressing the arms on which the free ends- 29 of the levers 20 rest. As the supporting arms 30 are depressed, the boxes 21 will be lowered, thereby lowering the grinding roll 8 and producing a slightly beveled or inclined surface upon the wire teeth of the flat.

During the operation of grinding, the flats are moved successively beneath the grinding roll in the direction of the arrows 7 by mechanism not shown in the drawings, but which is in common use in grinding mechanisms of this class and, therefore, well known. The flat while being ground engages the lip 44, causing the arm 37 and the mechanism carried thereby to be moved with the flat until the lip 44 rides upon the inclined surface 45' of a' plate 46 attached by a bolt 47 to the'fixed framework of the machine. As the lip. 44 passes over the in clined surface 45, the bolt 42 is rocked against the tension of atorsional spring 48, having one end attached to the bolt 42 and the'opposite end attached to the tubular casing 37*, thereby releasing the lip 44 from itsengagement with the edge of the flat. lhe weight 38 then reverses the motion of the bell crank, swinging the arm 37 to the right, Fig. 1, until the lip 44 is engaged by the advancing edge of the next succeeding flat which is about to pass beneath the grinding roll. The reverse movement of the bell crank also} carries the'stud' 34 to the right, Fig. 1, thereby reversing the rocking movement of the'shaft 31'and, by lifting the arms 30, restoring'the grinding roll to its normal elevation, at which the grinding operation upon the next flat begins. As the grinding proceeds across the surface of the flat, the grinding roll will be again lowered as already described, producing a slightly beveled or inclined surface on the beveled face of the flat.

The bolt 42 is capable of a sliding movement in the tubular casing 37 against the tension of the spring 48 which, in that case, acts as a compression spring between a shoulder 49 on the bolt and the interior end permanently out of engagement with the moving flats. As the swinging movement of the arm 37 is discontinued by the withdrawal of the bolt 42, the grinding roll will remain in its elevated position and the grinding of the flats will be discontinued.

I claim:

1. In a mechanism for grinding flats in carding machines, comprising a rotatable grinding roll, and mechanism for lowering said roll comprising a weighted bell crank, a bolt carried by said bell crank having a flange adapted to rest upon the working seat of the flat, and a'lip on said flange overlapping one edge of a flat, whereby said bolt is moved by the movement of the flat, and means for rocking said bolt.to disengage its lip from theflatn 2. In a mechanismfor grinding flats in carding machines, comprising a rotatable grinding roll, journal boxes supporting said roll, and mechanism for lowering said boxes, comprising a weighted bell crank, a bolt carried by said bell crank adapted to engage a flat as it moves beneath the grinding roll, a torsional spring to hold said bolt in engagement with theflat, and a stationary cam plate for rocking said bolt against the tension of said spring to release the flat.

3. In a mechanism for grinding flats of carding engines, means for lowering the grinding roll as aflat passes beneath it, comprising a bell crank, a bolt carried by said crank and arranged to engage a flat as it passes beneath the grinding roll, a spiral spring inclosing said bolt and adapted by its connection with said bolt to impart both a sliding and a rocking motion to said bolt, means for rocking said bolt against the tension of said spring to disengage the bolt from the flat.

5. In a mechanism for grinding flats in carding machines, a grinding roll and means for varying the position of said roll relatively to the fiat as the latter is passed beneath it, comprising a bell crank, a slidable and rocking bolt carried by said bell crank and arranged to engage a flat as it passes beneath the grinding roll, a spiral spring inclosing said bolt and connected therewith to impart a rocking and a sliding movement to said bolt, means for rocking 10 said bolt against the torsional tension of said spring, and means for holding said bolt against the longitudinal tension of said Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

. Washington, D. 0.

Corrections in Letters Patent No. 1,169,789.

It is hereby certified that in Letters Patent No. 1,169,789, granted February 1, 1916, upon the application of Joseph Fossel, of Grafton, Massachusetts, for an improvement in Mechanism for Grinding Flats in carding-Engines, errors appear in the printed specification requiring correction as follows: Page 1, lines 31-33 strike out the Words and numerals shown in sectional view on the plane of the dot and dash line 4-4 and insert the Words and numeral partly shown in sectional view by the removal of the arms 4; same page, line 66, for the Word brough read I brought; and that the said Letters Patent should be read with these corrections F therein that the same may conform to the record of the case in the Patent Ofiice.

Signed and sealed this 22d day of February, A. D., 1916.

[SEAL] R. F. WHITEHEAD,

01. 51-2. Acting Commissioner of Patents. 

